"Send Yuan to Twenty Shores Xi" is a very famous farewell poem of Wang Wei, which was once sung by music and called "Three Layers of Yangguan". The deep feeling in the poem is integrated into the plain words, which adds touching power and becomes a famous sentence that has been passed down through the ages. This poem describes the most common parting. It has no special background, but it has its own deep feelings of farewell, which is suitable for most people to sing outside the banquet. Later, it was compiled into Yuefu and became the most widely circulated and longest-lasting song.